Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 11 (November 2002)

Acta Cryst. (2002). C58, o669-o671 [doi:10.1107/S0108270102017171]

10-Methyl- and 9,10-dimethylacridinium methyl sulfate

J. Meszko, A. Sikorski, O. M. Huta, A. Konitz and J. Blazejowski

Abstract: The title compounds, C₁₄H₁₂N⁺·CH₃O₄S^-, (I), and C₁₅H₁₄N⁺·CH₃O₄S^-, (II), respectively, crystallize with the planar 10-methylacridinium or 9,10-dimethylacridinium cations arranged in layers, parallel to the twofold axis in (I) and perpendicular to the 2₁ axis in (II). Adjacent cations in both compounds are packed in a `head-to-tail' manner. The methyl sulfate anion only exhibits planar symmetry in (II). The cations and anions are linked through C-HO interactions involving three O atoms of the anion, six acridine H atoms and the CH₃ group on the N atom in (I), and the four O atoms of the anion, three acridine H atoms and the carbon-bound CH₃ group in (II). The methyl sulfate anions are oriented differently in the two compounds relative to the cations, being nearly perpendicular in (I) but parallel in (II). Electrostatic interaction between the ions and the network of C-HO interactions leads to relatively compact crystal lattices in both structures.

Formula: C₁₄H₁₂N⁺·CH₃O₄S^- and C₁₅H₁₄N⁺·CH₃O₄S^-

Online 22 October 2002


	Structure factor file (CIF format) (130.9 kbytes) Contains datablock I

	Structure factor file (CIF format) (77.2 kbytes) Contains datablock II

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